"Just Once" is a 1981 single released from Quincy Jones' album The Dude on A&M Records. The song features James Ingram on vocals, and reached number 17 on the Billboard chart in the summer of 1981.^[1] Ingram's singing was nominated for Best Male Pop Vocal Performance at the 1982 Grammy Awards.

On a television program interview, Ingram stated that this song was a $50 demo done by ATV Music, composed by Barry Mann and Cynthia Weil. Quincy Jones called back and wanted Ingram to sing on his album.^[2]

The song is composed originally in the key of C major. The bridge modulates to the key of A flat major, moves to B major, then to D major for the final chorus, finally ending in B major (the song's dominant chord) for the coda, representing the song's sad ending.^{[citation needed]}

• The song was featured prominently over the final scene of the 1982 film The Last American Virgin.